I upgraded from KWv1 to KWv2's and would definitely recommend the V2's. Everyone's comment of too stiff or too harsh is relative to their own taste. If you want to do it right the first time just get the KWv2's and set the rebound to how you want it.

For me:
Track setting = 3 from stiffest on all corners
DD = 7 from stiffest in the front and 10 from stiffest in the rear out of 15 clicks. It is softer than the sport suspension yet feels planted with reduced body roll.

And yes you should get an alignment because if you drop the control arms during the install your steering most likely will not be center.